Ferrous thiocarbonate

Ferrous thiocarbonate, FeCS3.—On adding an alkali thiocarbonate to ferrous sulphate solution a red liquid is obtained, which gradually becomes darker in colour on standing. The solution is believed to contain ferrous thiocarbonate (Berzelius). 

Ferrous thiocarbonate hexammoniate, Fe2C2S7.6NH3.2H20, is prepared by warming a mixture of ferrous hydroxide, aqueous ammonia, and carbon disulphide. It yields black tetragonal prisms, with violet iridescence. On exposure to air it decomposes with heat, ferric hydroxide resulting.4... 

Sodium ferro-heptanitroso sulphide, NaFe4(NO)7S3.2H20, may be obtained in a similar manner to the potassium salt by boiling a solution of sodium ferro-dinitroso thiosulphate, as also by the action of sodium nitrite and sulphide solutions upon ferrous sulphate. In this latter reaction the sodium sulphide may be replaced by sodium thiocarbonate, Na2CS3. 

Iron and Carbon-Iron Carbides—Cementite—Iron Carbonyls—Ferrous Carbonate-Complex Iron Carbonates—Thiocarbonates. 

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